CN212088293U

CN212088293U - Gauze mask

Info

Publication number: CN212088293U
Application number: CN202022050467.0U
Authority: CN
Inventors: 陈康平
Original assignee: Huakanghui Beijing Technology Co ltd
Current assignee: Huakanghui Beijing Technology Co ltd
Priority date: 2020-04-01
Filing date: 2020-09-17
Publication date: 2020-12-08
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a mask, mask includes the cover body and establishes the hangers of cover body both sides, the inboard of the cover body is equipped with side flap piece and end flap piece, the side flap piece is established the cover body is in the ascending both sides of length direction of this cover body, the end flap piece is established the lower edge of the cover body, the side flap piece with the end flap piece can turn over between closed position and open position closed position, the side flap piece with the end flap piece all with the inboard laminating of the cover body open the position, the at least part of side flap piece and/or the at least part of end flap piece is kept away from the cover body. According to the utility model discloses gauze mask has solved the bottom of gauze mask and the poor technical problem of bilateral nature leakproofness, has improved the sealed effect of protection of gauze mask greatly.

Description

Gauze mask

Technical Field

The utility model relates to the technical field of medical health, especially, relate to a mask.

Background

The mask is a sanitary protection tool, is used for reducing or preventing harmful particles in the air, including germs, viruses, suspended particles, harmful gases and the like from being inhaled into the lungs, ensures that a wearer inhales pure air to a certain extent, and is widely applied to the fields of labor protection and health care. Particularly in some environments with high pollution levels, masks have become a necessary protective tool.

In order to ensure that the mask has a good protection effect, the mask and the face are required to be well attached, otherwise, harmful gas easily enters the internal breathing space from the gap between the mask and the face. In the related art, the sealing performance between the mask and the nose bridge is often increased only by arranging the batten on the upper edge of the mask, and the sealing performance of the two sides and the bottom of the mask is poor.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a gauze mask, this gauze mask is good with the leakproofness between user's chin and the face, and the protecting effect is better.

According to the utility model discloses gauze mask includes the cover body and establishes the hangers of cover body both sides, the inboard of the cover body is equipped with side flap piece and bottom flap piece, the side flap piece is established the cover body is in the ascending both sides of the length direction of this cover body, the bottom flap piece is established the lower edge of the cover body, the side flap piece with the bottom flap piece can turn over between closed position and open position closed position, the side flap piece with the bottom flap piece all with the inboard laminating of the cover body open the position, at least part of side flap piece and/or at least part of bottom flap is kept away from the cover body flap piece.

According to the utility model discloses gauze mask sets up the bottom flap piece through the bottom at the cover body, sets up the side flap piece in the both sides of the cover body, has solved the bottom of gauze mask and the poor technical problem of bilateral nature leakproofness, has improved the sealed effect of protection of gauze mask greatly. In addition, the bottom folding piece and the side folding piece are mutually matched to form a supporting structure, so that the problem that the mask body of the mask is directly attached to the face is avoided to a certain extent, and the comfort level of wearing the mask by a user is improved.

In some embodiments, the bottom flap comprises a first edge and a second edge oppositely arranged in the length direction of the cover and a third edge and a fourth edge oppositely arranged in the width direction of the cover, the first edge of the bottom flap is connected with the lower edge of the cover, the third edge and the fourth edge of the bottom flap are both connected with the cover, in the closed position, the second edge of the bottom flap is attached with the cover, in the open position, at least part of the second edge of the bottom flap is far away from the cover, the side flap comprises a first edge and a second edge oppositely arranged in the length direction of the cover and a third edge and a fourth edge oppositely arranged in the width direction of the cover, the first edge of the side flap is connected with the outer edge of the cover in the length direction of the cover, the third edge of the side flap is connected to the cover, the fourth edge of the side flap is connected to the first edge of the bottom flap, the second edge of the side flap is attached to the cover in the closed position, and at least a portion of the second edge of the side flap is away from the cover in the open position.

In some embodiments, the second edge of the bottom flap and the second edge of the side flap are each provided with an elastic sealing edge.

In some embodiments, the material of the side flaps and the bottom flaps are both flexible panels.

In some embodiments, the shell includes a face layer, a core layer, and an inner layer arranged in sequence from the outside to the inside.

In some embodiments, the core layer includes a nonwoven layer disposed on a side adjacent to the face layer and a meltblown layer disposed on a side adjacent to the inner layer.

In some embodiments, the nonwoven layer is formed using catalytic processing.

In some embodiments, the cover is provided with a first supporting strip, at least a part of the first supporting strip is located at a central position of the cover, and the first supporting strip is an elastic supporting strip.

In some embodiments, the cover body is further provided with a second supporting strip, the second supporting strip is an elastic supporting strip, the length direction of the first supporting strip and the length direction of the second supporting strip are arranged on the cover body in a crossed manner, and the crossing point of the first supporting strip and the second supporting strip is located at the center of the cover body.

In some embodiments, the cover body has two first welding marks parallel to each other and two second welding marks parallel to each other, the cover body is provided with a first channel for the first supporting bar to pass through and a second channel for the second supporting bar to pass through, the first channel is formed between the two first welding marks, and the second channel is formed between the two second welding marks.

In some embodiments, the ends of the first and second support bars are spherical.

Drawings

Fig. 1 is a schematic view of a mask according to an embodiment of the present invention;

fig. 2 is a schematic view of a mask according to an embodiment of the present invention in an open position;

fig. 3 is a schematic view of a mask according to another embodiment of the present invention.

Reference numerals:

the cover body 1 is provided with a plurality of grooves,

the hanging ring (2) is provided with a hanging ring,

bottom flap 3, bottom flap first edge 31, bottom flap second edge 32, bottom flap third edge 33, bottom flap fourth edge 34,

side flap 4, first edge 41 of the side flap, second edge 42 of the side flap, third edge 44 of the side flap, fourth edge 44 of the side flap,

the first support strip 5, the first weld mark 51, the first channel 52,

the second support bar 6, the second weld mark 61, the second channel 62,

the elastic edge sealing 7 is arranged at the edge of the bag,

and (7) pressing strips 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, the mask according to the embodiment of the present invention comprises a mask body 1 and hanging lugs 2 arranged on two sides of the mask body 1, wherein the inner side of the mask body 1 is provided with a side folding piece 4 and a bottom folding piece 3. The inner side of the mask body 1 refers to the side of the mask body 1 which is attached to the face in the using process of the mask.

The side folding pieces 4 are arranged on two sides of the cover body 1 in the length direction (the left and right direction shown by the arrow in fig. 1) of the cover body 1, the bottom folding pieces 3 are arranged on the lower edge of the cover body 1, the side folding pieces 4 and the bottom folding pieces 3 can be folded between a closing position and an opening position, in the closing position, the side folding pieces 4 and the bottom folding pieces 3 are attached to the inner side of the cover body 1, and in the opening position, at least part of the side folding pieces 4 and/or at least part of the bottom folding pieces 3 are far away from the cover body 1.

It can be understood that the side folding pieces 4 are arranged at two sides of the cover body 1, the bottom folding pieces 3 are arranged at the lower edge of the cover body 1, when the cover body is in the closed position, the side folding pieces 4 and the bottom folding pieces 3 are both attached to the cover body 1, and the cover body 1 is of a plane structure and occupies a small space. As shown in fig. 2, in the open position, the bottom flaps 3 and the side flaps 4 are folded outwardly, the folded bottom flaps 3 are positioned below and in engagement with the chin of the user, and the side flaps 4 on either side are in engagement with the face on either side of the user.

According to the utility model discloses gauze mask through setting up bottom folded piece 3 in the bottom of the cover body 1, sets up side folded piece 4 in the both sides of the cover body 1, has solved the bottom of gauze mask and the poor technical problem of bilateral nature leakproofness, has improved the sealed effect of protection of gauze mask greatly. In addition, bottom flap 3 and side flap 4 mutually support, have formed bearing structure, have avoided the problem of the direct laminating of the cover body 1 of gauze mask on the face to a certain extent, have improved the comfort level that the user wore the gauze mask.

Specifically, as shown in fig. 1, the bottom flap 3 includes a first edge 31 and a second edge 32 that are oppositely disposed in the length direction of the cover 1, and a third edge 33 and a fourth edge 34 that are oppositely disposed in the width direction of the cover 1, the first edge 34 of the bottom flap 3 is connected to the lower edge of the cover 1, the third edge 33 and the fourth edge 34 of the bottom flap 3 are both connected to the cover 1, the second edge 32 of the bottom flap 3 is attached to the cover 1 in the closed position, and at least a portion of the second edge 32 of the bottom flap 3 is away from the cover 1 in the open position. The first edge 31, the third edge 33 and the fourth edge 34 of the bottom flap 3 are connected with the cover 1, and the second edge 32 of the bottom flap 3 can be folded.

The side flap 4 comprises a first edge 41 and a second edge 42 which are oppositely arranged in the length direction of the cover 1 and a third edge 43 and a fourth edge 44 which are oppositely arranged in the width direction of the cover 1, the first edge 41 of the side flap 4 is connected with the outer edge of the cover 1 in the length direction of the cover 1, the third edge 43 of the side flap 4 is connected with the cover 1, the fourth edge 44 of the side flap 4 is connected with the first edge 31 of the bottom flap 3, the second edge 42 of the side flap 4 is attached with the cover 1 in the closed position, and at least part of the second edge 42 of the side flap 4 is far away from the cover 1 in the open position. The first edge 41, the third edge 43 and the fourth edge 44 of the side flap 4 are connected with the cover 1 or the bottom flap 3, and the second edge 42 of the side flap 4 can be folded.

The number of the side flaps 4 is two, and the first edge 41 of the side flap 4 is an edge connected to both the left and right sides of the cover 1, and as shown in fig. 1, the left edge of the side flap 4 located on the left side is the first edge 41, and the right edge is the second edge 42. The right edge of the side flap 4 on the right side is a first edge 41 and the left edge is a second edge 42.

It can be understood that in the closed position, the bottom flap 3 is located inside the side flap 4, so that the fourth edge of the side flap 4 is connected to the first edge of the bottom flap 3, and thus the arrangement is such that when a user folds the bottom flap 3 downward, the bottom flap 3 will bring the side flap 4 to fold outward, and the bottom flap 3 and the side flap 4 will simultaneously change from the closed position to the open position, which is convenient for use.

In some embodiments, the second edge 32 of the bottom flap 3 and the second edge 42 of the side flap 4 are both provided with an elastic sealing edge 7. For example, the elastic sealing edge 7 can be an elastic band, and the elastic sealing edge 7 is used for increasing pretightening force for the bottom folding edge and the side folding edge, so that the bottom folding edge is better attached to the lower jaw, and the side folding edge is better attached to the cheek, so that the sealing property between the mask and the face can be further improved, and the protection effect of the mask is improved.

In some embodiments, the material of both the side flaps 4 and the bottom flaps 3 is a flexible fabric. So set up, user's face and bottom flap 3 and side flap 4 contact more comfortable to flexible surface fabric can laminate completely in user's face and chin below, and the sealed effectual of gauze mask.

In some embodiments, shell 1 includes a face layer, a core layer, and an inner layer in that order from the outside inward. Specifically, the inner layer is a common non-woven fabric layer, and the surface layer is a blue non-woven fabric layer.

Specifically, the core layer includes a non-woven fabric layer and a melt-blown fabric layer, the non-woven fabric layer is arranged on one side adjacent to the surface layer, the melt-blown fabric layer is arranged on one side adjacent to the lining layer, the non-woven fabric layer is a catalyst e + processed non-woven fabric layer made of non-woven fabric materials processed by catalyst technology, the non-woven fabric layer can effectively inhibit influenza viruses and pathogenic bacteria in the air and decompose peculiar smell, the material is proved by experiments of biomedical scientific research of Japanese NPO (non-positive pressure oxygen) law, the effective rate is more than or equal to 99 percent, no toxic or side effect is caused to human contact, and Japanese utility model patent No.: 5995100 protection number.

Compare in the gauze mask of traditional three-layer protection, the utility model discloses be equipped with four layers of surface fabric, the protecting effect is better to catalyst e + processing non-woven fabrics layer has still been used in the core in situ, greatly increased the effect of gauze mask filtration virus and the fresh degree of air in the gauze mask.

As shown in fig. 3, in some embodiments, the mask body 1 is provided with a first supporting strip 5, at least a part of the first supporting strip 5 is substantially located at the center of the mask body, the first supporting strip 5 is an elastic supporting strip, when the mask is worn by a user, the mask body 1 protrudes outwards under the action of the face, the linear distance between two ends of the first supporting strip 5 is shortened, the first supporting strip 5 bends to support the mask body 1, so that a sufficient space is left between the mask body 1 and the face of the user, rather than the mask directly attached to the face of the user.

Further, the cover 1 is provided with a second supporting bar 6, the length direction of the first supporting bar 5 and the length direction of the second supporting bar 6 are arranged crosswise on the cover 1, and the intersection point of the first supporting bar 5 and the second supporting bar 6 is located at the center of the cover 1.

Similarly, when the user wears the mask, the second supporting bar 6 is bent, the intersection points of the first supporting bar 5 and the second supporting bar 6 protrude outwards, the mask body 1 protrudes outwards and is formed in a shape similar to a hemisphere, and the intersection points of the first supporting bar 5 and the second supporting bar 6 are substantially located in the center of the mask body 1, so that the mask body 1 can be better prevented from being attached to the mouth and the nose of the user and affecting breathing. After the user takes off the mask, the first supporting strips 5 and the second supporting strips 6 can be restored to the original state under the action of external force or through the first supporting strips, so that the size of the mask is reduced, and the mask is convenient to carry and store.

According to the utility model discloses gauze mask has improved user's comfort level on the one hand, breathes more smoothly, and on the other hand has avoided the direct infiltration gauze mask of steam of user's exhalation, has improved the effective use time of gauze mask, and in addition, cover body 1 is outside protruding, forms the contained angle between the border of the cover body 1 and the user face, rather than direct laminating on the face, the border of the cover body 1 forms more easily with face assorted shape to increase the gas tightness of gauze mask, the protective effect of gauze mask is stronger.

In some embodiments, the cover body 1 has two first welding marks 51 parallel to each other and two second welding marks 61 parallel to each other, the first welding marks 51 and the second welding marks 61 are welding marks formed by ultrasonic welding, the cover body 1 is provided with a first channel 52 and a second channel 62, the first channel 52 is used for the first supporting strip 5 to pass through, the second channel 62 is used for the second supporting strip 6 to pass through, the first channel 52 is formed between the two first welding marks 51, the second channel 62 is formed between the two second welding marks 61, and after the first supporting strip 5 enters the first channel 52 and the second supporting strip 6 enters the second channel 62, both ends of the first channel 52 and the second channel 62 are sealed by ultrasonic welding, thus, the first and second passages 52 and 62 can fix the first and second supporting bars 5 and 6 inside the cover 1, preventing the first and second supporting bars 5 and 6 from moving inside the cover 1.

It should be noted that, in addition to the first supporting bars 5 and the second supporting bars 6 provided inside the mask body 1 in the above-mentioned embodiments, the first supporting bars 5 and the second supporting bars 6 may also be provided on the surface of the mask body 1, for example, the first supporting bars 5 and the second supporting bars 6 are provided on the inner side (the side close to the face) of the mask body 1, or the first supporting bars 5 and the second supporting bars 6 are provided on the outer side (the side far from the face) of the mask body 1. As long as the cover body 1 can be supported.

In some embodiments, the end portions of the first supporting bars 5 and/or the end portions of the second supporting bars 6 are spherical, and compared with a common belt-shaped structure, the spherical structure is not only smoother, but also the contact area between the end portions of the first supporting bars 5 and the end portions of the second supporting bars 6 and the cover 1 can be increased, and the situation that the end portions of the first supporting bars 5 or the second supporting bars 6 puncture the cover 1 in use can be avoided.

In some embodiments, the upper edge of the mask body 1 is further provided with a pressing strip 8, the pressing strip 8 is preferably an environmentally-friendly full plastic strip, and the pressing strip 8 can enable the upper edge of the mask body 1 to be better attached to the bridge of the nose, which is beneficial to improving the sealing performance of the mask.

A mask according to some specific examples of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the mask according to the embodiment of the present invention includes a mask body 1 and hanging ears 2 disposed on two sides of the mask body 1, the inner side of the mask body 1 is provided with side folding pieces 4 and bottom folding pieces 3, the side folding pieces 4 are disposed on two sides of the mask body 1 in the length direction of the mask body 1, the bottom folding pieces 3 are disposed on the lower edge of the mask body 1, the side folding pieces 4 and the bottom folding pieces 3 can be folded between the closed position and the open position, in the closed position, the side folding pieces 4 and the bottom folding pieces 3 are both attached to the inner side of the mask body 1, in the open position, the bottom folding pieces 3 and the side folding pieces 4 are folded outwards, the folded pieces 3 after being folded are located below the chin of a user and are attached to the chin, and the side folding pieces 4 on two.

The bottom folding piece 3 comprises a first edge, a second edge, a third edge and a fourth edge, the first edge, the third edge and the fourth edge of the bottom folding piece 3 are connected with the cover body 1, the second edge of the bottom folding piece 3 can be folded, and an elastic sealing edge 7 is arranged at the second edge of the bottom folding piece 3.

The side folding piece 4 is arranged between the cover body 1 and the bottom folding piece 3, the side folding piece 4 comprises a first edge, a second edge, a third edge and a fourth edge, the first edge and the third edge of the side folding piece 4 are connected with the cover body 1, the fourth edge of the side folding piece 4 is connected with the first edge of the bottom folding piece 3, the second edge of the side folding piece 4 can be folded, and the second edge of the side folding piece 4 is provided with an elastic sealing edge 7.

The cover body 1 is provided with a first supporting strip 5 and a second supporting strip 6, the first supporting strip 5 is arranged along the length direction of the cover body 1, the second supporting strip 6 is arranged along the width direction of the cover body 1, the intersection point of the first supporting strip 5 and the second supporting strip 6 is substantially located at the center position of the cover body 1, the first supporting strip 5 and the second supporting strip 6 are both made of elastic materials, and the end parts of the first supporting strip 5 and the second supporting strip 6 are both spherical.

As shown in fig. 3, the cover body 1 is provided with a first channel 52 for the first supporting strip 5 to pass through and a second channel 62 for the second supporting strip 6 to pass through, the first channel 52 is formed between two first welding marks 51, the second channel 62 is formed between two second welding marks 61, and after the first supporting strip 5 enters the first channel 52 and the second supporting strip 6 enters the second channel 62, both ends of the first channel 52 and the second channel 62 are sealed by ultrasonic welding.

The mask body 1 comprises a surface layer, a core layer and an inner layer which are sequentially arranged from outside to inside, the core layer of the mask body 1 is of a double-layer structure and comprises a non-woven fabric layer and a melt-blown fabric layer, the non-woven fabric layer is arranged on one side adjacent to the surface layer, the melt-blown fabric layer is arranged on one side adjacent to the inner layer, the non-woven fabric layer is a catalyst e + processing non-woven fabric layer made of non-woven fabric materials processed by a catalyst technology, the inner layer of the mask body 1 is a common non-woven fabric layer, and the surface layer of.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A mask is characterized by comprising a mask body and hanging lugs arranged on two sides of the mask body, wherein side folding pieces and bottom folding pieces are arranged on the inner side of the mask body, the side folding pieces are arranged on two sides of the mask body in the length direction of the mask body, the bottom folding pieces are arranged on the lower edge of the mask body, the side folding pieces and the bottom folding pieces can be folded between a closed position and an open position, in the closed position, the side folding pieces and the bottom folding pieces are attached to the inner side of the mask body, and in the open position, at least parts of the side folding pieces and/or at least parts of the bottom folding pieces are far away from the mask body.

2. The mask of claim 1 wherein said bottom flap comprises first and second edges disposed opposite one another in a lengthwise direction of said shell and third and fourth edges disposed opposite one another in a widthwise direction of said shell, said first edge of said bottom flap being connected to said lower edge of said shell, said third and fourth edges of said bottom flap being connected to said shell, said second edge of said bottom flap being attached to said shell in said closed position, and said second edge of said bottom flap being at least partially distal from said shell in said open position,

the side folding pieces comprise a first edge and a second edge which are oppositely arranged in the length direction of the cover body, and a third edge and a fourth edge which are oppositely arranged in the width direction of the cover body, the first edge of each side folding piece is connected with the outer edge of the cover body in the length direction of the cover body, the third edge of each side folding piece is connected with the cover body, the fourth edge of each side folding piece is connected with the first edge of each bottom folding piece, the second edge of each side folding piece is attached to the cover body in the closed position, and at least part of the second edge of each side folding piece is far away from the cover body in the open position.

3. The mask of claim 2 wherein the second edges of said bottom flaps and said second edges of said side flaps are provided with a flexible seal.

4. The mask of claim 1 wherein said side flaps and said bottom flaps are both of a flexible material.

5. The mask of claim 1 wherein said shell comprises a face layer, a core layer and an inner layer in that order from the outside to the inside.

6. The mask of claim 5 wherein said core layer comprises a nonwoven layer and a meltblown layer, said nonwoven layer being disposed adjacent said face layer and said meltblown layer being disposed adjacent said inner layer.

7. The mask of claim 6 wherein said non-woven layer is formed using catalytic processing.

8. The mask of claim 1 wherein said shell has a first support strip, at least a portion of said first support strip being located substantially centrally on said shell, said first support strip being an elastic support strip.

9. The mask according to claim 8, wherein the mask body is further provided with a second supporting strip, the second supporting strip is an elastic supporting strip, the length direction of the first supporting strip and the length direction of the second supporting strip are arranged on the mask body in a crossed manner, and the crossing point of the first supporting strip and the second supporting strip is located at the center of the mask body.

10. The mask according to claim 9, wherein the mask body has two first welding marks parallel to each other and two second welding marks parallel to each other, the mask body is provided with a first passage for the first support bar to pass through and a second passage for the second support bar to pass through, the first passage is formed between the two first welding marks, and the second passage is formed between the two second welding marks.

11. The mask of claim 9 wherein the ends of said first support bar and said second support bar are spherical.